131604725 has 24 divisors (see below), whose sum is σ = 190850880. Its totient is φ = 88139520.

The previous prime is 131604719. The next prime is 131604731. The reversal of 131604725 is 527406131.

It is an interprime number because it is at equal distance from previous prime (131604719) and next prime (131604731).

It is not a de Polignac number, because 131604725 - 2¹⁰ = 131603701 is a prime.

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, 1220 + ... + 16269.

It is an arithmetic number, because the mean of its divisors is an integer number (7952120).

Almost surely, 2^131604725 is an apocalyptic number.

It is an amenable number.

131604725 is a deficient number, since it is larger than the sum of its proper divisors (59246155).

131604725 is a wasteful number, since it uses less digits than its factorization.

131604725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17549 (or 17544 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 131604725 is about 11471.9102594119. The cubic root of 131604725 is about 508.6555966638.

The spelling of 131604725 in words is "one hundred thirty-one million, six hundred four thousand, seven hundred twenty-five".