23859436225 has 9 divisors (see below), whose sum is σ = 29586658633. Its totient is φ = 19086931120.

The previous prime is 23859436201. The next prime is 23859436243. The reversal of 23859436225 is 52263495832.

The square root of 23859436225 is 154465.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1617889729 + 22241546496 = 40223^2 + 149136^2 .

It is not a de Polignac number, because 23859436225 - 2²⁹ = 23322565313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 756879 + ... + 787771.

Almost surely, 2^23859436225 is an apocalyptic number.

23859436225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23859436225 is the 154465-th square number.

23859436225 is the 77233-rd centered octagonal number.

It is an amenable number.

23859436225 is a deficient number, since it is larger than the sum of its proper divisors (5727222408).

23859436225 is an frugal number, since it uses more digits than its factorization.

23859436225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61796 (or 30898 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 49.

Multiplying 23859436225 by its sum of digits (49), we get a square (1169112375025 = 1081255²).

The spelling of 23859436225 in words is "twenty-three billion, eight hundred fifty-nine million, four hundred thirty-six thousand, two hundred twenty-five".