15625413 has 8 divisors (see below), whose sum is σ = 23148800. Its totient is φ = 10416924.

The previous prime is 15625381. The next prime is 15625427. The reversal of 15625413 is 31452651.

It is not a de Polignac number, because 15625413 - 2⁵ = 15625381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 578719 = 15625413 / (1 + 5 + 6 + 2 + 5 + 4 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15625483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289333 + ... + 289386.

It is an arithmetic number, because the mean of its divisors is an integer number (2893600).

Almost surely, 2^15625413 is an apocalyptic number.

It is an amenable number.

15625413 is a deficient number, since it is larger than the sum of its proper divisors (7523387).

15625413 is an equidigital number, since it uses as much as digits as its factorization.

15625413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578728 (or 578722 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 15625413 is about 3952.8993156922. The cubic root of 15625413 is about 250.0022026473.

It can be divided in two parts, 156254 and 13, that multiplied together give a palindrome (2031302).

The spelling of 15625413 in words is "fifteen million, six hundred twenty-five thousand, four hundred thirteen".