15625254263 has 4 divisors (see below), whose sum is σ = 16304613168. Its totient is φ = 14945895360.

The previous prime is 15625254233. The next prime is 15625254269. The reversal of 15625254263 is 36245252651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36245252651 = 37 ⋅979601423.

It is a cyclic number.

It is not a de Polignac number, because 15625254263 - 2¹⁶ = 15625188727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15625254263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15625254269) 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, 339679418 + ... + 339679463.

It is an arithmetic number, because the mean of its divisors is an integer number (4076153292).

Almost surely, 2^15625254263 is an apocalyptic number.

15625254263 is a deficient number, since it is larger than the sum of its proper divisors (679358905).

15625254263 is an equidigital number, since it uses as much as digits as its factorization.

15625254263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679358904.

The product of its digits is 432000, while the sum is 41.

The spelling of 15625254263 in words is "fifteen billion, six hundred twenty-five million, two hundred fifty-four thousand, two hundred sixty-three".