15625373385 has 16 divisors (see below), whose sum is σ = 25015670784. Its totient is φ = 8328508032.

The previous prime is 15625373381. The next prime is 15625373399. The reversal of 15625373385 is 58337352651.

It is not a de Polignac number, because 15625373385 - 2² = 15625373381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15625373381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288252 + ... + 338141.

It is an arithmetic number, because the mean of its divisors is an integer number (1563479424).

Almost surely, 2^15625373385 is an apocalyptic number.

15625373385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15625373385 is a deficient number, since it is larger than the sum of its proper divisors (9390297399).

15625373385 is a wasteful number, since it uses less digits than its factorization.

15625373385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628064.

The product of its digits is 2268000, while the sum is 48.

The spelling of 15625373385 in words is "fifteen billion, six hundred twenty-five million, three hundred seventy-three thousand, three hundred eighty-five".