625136154164507 has 4 divisors (see below), whose sum is σ = 639674204261400. Its totient is φ = 610598104067616.

The previous prime is 625136154164477. The next prime is 625136154164527. The reversal of 625136154164507 is 705461451631526.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 625136154164507 - 2¹² = 625136154160411 is a prime.

It is a super-2 number, since 2×625136154164507² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625136154164527) 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, 7269025048382 + ... + 7269025048467.

It is an arithmetic number, because the mean of its divisors is an integer number (159918551065350).

Almost surely, 2^{625136154164507} is an apocalyptic number.

625136154164507 is a deficient number, since it is larger than the sum of its proper divisors (14538050096893).

625136154164507 is a wasteful number, since it uses less digits than its factorization.

625136154164507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14538050096892.

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 625136154164507 in words is "six hundred twenty-five trillion, one hundred thirty-six billion, one hundred fifty-four million, one hundred sixty-four thousand, five hundred seven".