631142025 has 24 divisors (see below), whose sum is σ = 1046626464. Its totient is φ = 335596800.

The previous prime is 631142023. The next prime is 631142027. The reversal of 631142025 is 520241136.

It is an interprime number because it is at equal distance from previous prime (631142023) and next prime (631142027).

It is not a de Polignac number, because 631142025 - 2¹ = 631142023 is a prime.

It is a super-2 number, since 2×631142025² = 796680511442201250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 631141986 and 631142004.

It is not an unprimeable number, because it can be changed into a prime (631142021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12790 + ... + 37760.

It is an arithmetic number, because the mean of its divisors is an integer number (43609436).

Almost surely, 2^631142025 is an apocalyptic number.

It is an amenable number.

631142025 is a deficient number, since it is larger than the sum of its proper divisors (415484439).

631142025 is a wasteful number, since it uses less digits than its factorization.

631142025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25321 (or 25316 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 631142025 is about 25122.5401780950. The cubic root of 631142025 is about 857.7795726426.

The spelling of 631142025 in words is "six hundred thirty-one million, one hundred forty-two thousand, twenty-five".