712121025 has 48 divisors (see below), whose sum is σ = 1467906048. Its totient is φ = 295944000.

The previous prime is 712121023. The next prime is 712121027. The reversal of 712121025 is 520121217.

It is an interprime number because it is at equal distance from previous prime (712121023) and next prime (712121027).

It is not a de Polignac number, because 712121025 - 2¹ = 712121023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 712120992 and 712121010.

It is not an unprimeable number, because it can be changed into a prime (712121023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55881 + ... + 67430.

It is an arithmetic number, because the mean of its divisors is an integer number (30581376).

Almost surely, 2^712121025 is an apocalyptic number.

712121025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

712121025 is an abundant number, since it is smaller than the sum of its proper divisors (755785023).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

712121025 is a wasteful number, since it uses less digits than its factorization.

712121025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123342 (or 123337 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 712121025 is about 26685.5958337077. The cubic root of 712121025 is about 892.9996104242. Note that the first 3 decimals are identical.

The spelling of 712121025 in words is "seven hundred twelve million, one hundred twenty-one thousand, twenty-five".