625404132040 has 32 divisors (see below), whose sum is σ = 1452551535360. Its totient is φ = 242091921600.

The previous prime is 625404132029. The next prime is 625404132091. The reversal of 625404132040 is 40231404526.

It is a super-2 number, since 2×625404132040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 625404131993 and 625404132011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252177846 + ... + 252180325.

It is an arithmetic number, because the mean of its divisors is an integer number (45392235480).

Almost surely, 2^625404132040 is an apocalyptic number.

It is an amenable number.

625404132040 is an abundant number, since it is smaller than the sum of its proper divisors (827147403320).

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

625404132040 is a wasteful number, since it uses less digits than its factorization.

625404132040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504358213 (or 504358209 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 625404132040 its reverse (40231404526), we get a palindrome (665635536566).

The spelling of 625404132040 in words is "six hundred twenty-five billion, four hundred four million, one hundred thirty-two thousand, forty".