15624375001 has 2 divisors, whose sum is σ = 15624375002. Its totient is φ = 15624375000.

The previous prime is 15624374999. The next prime is 15624375029. The reversal of 15624375001 is 10057342651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13427015625 + 2197359376 = 115875^2 + 46876^2 .

It is a cyclic number.

It is not a de Polignac number, because 15624375001 - 2¹ = 15624374999 is a prime.

Together with 15624374999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15624375401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7812187500 + 7812187501.

It is an arithmetic number, because the mean of its divisors is an integer number (7812187501).

Almost surely, 2^15624375001 is an apocalyptic number.

It is an amenable number.

15624375001 is a deficient number, since it is larger than the sum of its proper divisors (1).

15624375001 is an equidigital number, since it uses as much as digits as its factorization.

15624375001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

It can be divided in two parts, 15624 and 375001, that added together give a 8-th power (390625 = 5⁸).

The spelling of 15624375001 in words is "fifteen billion, six hundred twenty-four million, three hundred seventy-five thousand, one".