625251021052 has 12 divisors (see below), whose sum is σ = 1250502042160. Its totient is φ = 267964723296.

The previous prime is 625251021007. The next prime is 625251021053. The reversal of 625251021052 is 250120152526.

It is a happy number.

625251021052 is an admirable number.

It is a super-3 number, since 3×625251021052³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625251021053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11165196777 + ... + 11165196832.

Almost surely, 2^625251021052 is an apocalyptic number.

It is an amenable number.

625251021052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

625251021052 is a wasteful number, since it uses less digits than its factorization.

625251021052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330393620 (or 22330393618 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 625251021052 its reverse (250120152526), we get a palindrome (875371173578).

The spelling of 625251021052 in words is "six hundred twenty-five billion, two hundred fifty-one million, twenty-one thousand, fifty-two".