123981725 has 24 divisors (see below), whose sum is σ = 176530368. Its totient is φ = 84614400.

The previous prime is 123981713. The next prime is 123981733. The reversal of 123981725 is 527189321.

123981725 = T₂₃₀ + T₂₃₁ + ... + T₉₁₀.

It is not a de Polignac number, because 123981725 - 2¹⁶ = 123916189 is a prime.

Its product of digits (30240) is a multiple of the sum of its prime divisors (3360).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38165 + ... + 41285.

It is an arithmetic number, because the mean of its divisors is an integer number (7355432).

Almost surely, 2^123981725 is an apocalyptic number.

It is an amenable number.

123981725 is a deficient number, since it is larger than the sum of its proper divisors (52548643).

123981725 is a wasteful number, since it uses less digits than its factorization.

123981725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365 (or 3360 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 123981725 is about 11134.7081237004. The cubic root of 123981725 is about 498.6385965255.

The spelling of 123981725 in words is "one hundred twenty-three million, nine hundred eighty-one thousand, seven hundred twenty-five".