631426212025 has 18 divisors (see below), whose sum is σ = 910800096990. Its totient is φ = 432977973120.

The previous prime is 631426212023. The next prime is 631426212049. The reversal of 631426212025 is 520212624136.

631426212025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 86881099536 + 544545112489 = 294756^2 + 737933^2 .

It is not a de Polignac number, because 631426212025 - 2¹ = 631426212023 is a prime.

It is a super-2 number, since 2×631426212025² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (631426212023) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 257723760 + ... + 257726209.

Almost surely, 2^631426212025 is an apocalyptic number.

It is an amenable number.

631426212025 is a deficient number, since it is larger than the sum of its proper divisors (279373884965).

631426212025 is a wasteful number, since it uses less digits than its factorization.

631426212025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515449993 (or 515449981 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 631426212025 in words is "six hundred thirty-one billion, four hundred twenty-six million, two hundred twelve thousand, twenty-five".