625534421463634 has 16 divisors (see below), whose sum is σ = 941164389710496. Its totient is φ = 311813014471200.

The previous prime is 625534421463593. The next prime is 625534421463661. The reversal of 625534421463634 is 436364124435526.

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, 8226229 + ... + 36314455.

It is an arithmetic number, because the mean of its divisors is an integer number (58822774356906).

Almost surely, 2^{625534421463634} is an apocalyptic number.

625534421463634 is a deficient number, since it is larger than the sum of its proper divisors (315629968246862).

625534421463634 is a wasteful number, since it uses less digits than its factorization.

625534421463634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28122201.

The product of its digits is 149299200, while the sum is 58.

The spelling of 625534421463634 in words is "six hundred twenty-five trillion, five hundred thirty-four billion, four hundred twenty-one million, four hundred sixty-three thousand, six hundred thirty-four".