15625000007 has 2 divisors, whose sum is σ = 15625000008. Its totient is φ = 15625000006.

The previous prime is 15624999983. The next prime is 15625000019. The reversal of 15625000007 is 70000052651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15625000007 - 2¹⁴ = 15624983623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15625000007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15625000087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7812500003 + 7812500004.

It is an arithmetic number, because the mean of its divisors is an integer number (7812500004).

Almost surely, 2^15625000007 is an apocalyptic number.

15625000007 is a deficient number, since it is larger than the sum of its proper divisors (1).

15625000007 is an equidigital number, since it uses as much as digits as its factorization.

15625000007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

Adding to 15625000007 its reverse (70000052651), we get a palindrome (85625052658).

The spelling of 15625000007 in words is "fifteen billion, six hundred twenty-five million, seven", and thus it is an aban number.