31742025 has 48 divisors (see below), whose sum is σ = 60662784. Its totient is φ = 14345280.

The previous prime is 31742023. The next prime is 31742083. The reversal of 31742025 is 52024713.

It is not a de Polignac number, because 31742025 - 2¹ = 31742023 is a prime.

It is a super-2 number, since 2×31742025² = 2015112302201250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31741986 and 31742004.

It is not an unprimeable number, because it can be changed into a prime (31742023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53782 + ... + 54368.

It is an arithmetic number, because the mean of its divisors is an integer number (1263808).

Almost surely, 2^31742025 is an apocalyptic number.

31742025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31742025 is a deficient number, since it is larger than the sum of its proper divisors (28920759).

31742025 is a wasteful number, since it uses less digits than its factorization.

31742025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 31742025 is about 5634.0061235323. The cubic root of 31742025 is about 316.6247620758.

Adding to 31742025 its reverse (52024713), we get a palindrome (83766738).

The spelling of 31742025 in words is "thirty-one million, seven hundred forty-two thousand, twenty-five".