123970889025 has 27 divisors (see below), whose sum is σ = 222055096809. Its totient is φ = 66114990720.

The previous prime is 123970889023. The next prime is 123970889039. The reversal of 123970889025 is 520988079321.

The square root of 123970889025 is 352095.

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 32662971441 + 91307917584 = 180729^2 + 302172^2 .

It is not a de Polignac number, because 123970889025 - 2¹ = 123970889023 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (123970889023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5269689 + ... + 5293161.

Almost surely, 2^123970889025 is an apocalyptic number.

123970889025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123970889025 is the 352095-th square number.

123970889025 is the 176048-th centered octagonal number.

It is an amenable number.

123970889025 is a deficient number, since it is larger than the sum of its proper divisors (98084207784).

123970889025 is an frugal number, since it uses more digits than its factorization.

123970889025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46962 (or 23481 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 123970889025 in words is "one hundred twenty-three billion, nine hundred seventy million, eight hundred eighty-nine thousand, twenty-five".