725136 has 20 divisors (see below), whose sum is σ = 1873392. Its totient is φ = 241696.

The previous prime is 725119. The next prime is 725147. The reversal of 725136 is 631527.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7506 + ... + 7601.

2⁷²⁵¹³⁶ is an apocalyptic number.

It is an amenable number.

725136 is an abundant number, since it is smaller than the sum of its proper divisors (1148256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725136 is a wasteful number, since it uses less digits than its factorization.

725136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15118 (or 15112 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 725136 is about 851.5491765013. The cubic root of 725136 is about 89.8407058805.

It can be divided in two parts, 725 and 136, that added together give a triangular number (861 = T₄₁).

The spelling of 725136 in words is "seven hundred twenty-five thousand, one hundred thirty-six".