20125501025 has 24 divisors (see below), whose sum is σ = 28841189760. Its totient is φ = 13645272960.

The previous prime is 20125501013. The next prime is 20125501061. The reversal of 20125501025 is 52010552102.

It is not a de Polignac number, because 20125501025 - 2¹² = 20125496929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630509 + ... + 661658.

It is an arithmetic number, because the mean of its divisors is an integer number (1201716240).

Almost surely, 2^20125501025 is an apocalyptic number.

20125501025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20125501025 is a deficient number, since it is larger than the sum of its proper divisors (8715688735).

20125501025 is a wasteful number, since it uses less digits than its factorization.

20125501025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292273 (or 1292268 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 20125501025 in words is "twenty billion, one hundred twenty-five million, five hundred one thousand, twenty-five".