18761725 has 12 divisors (see below), whose sum is σ = 23328864. Its totient is φ = 14967920.

The previous prime is 18761681. The next prime is 18761737. The reversal of 18761725 is 52716781.

It is not a de Polignac number, because 18761725 - 2²³ = 10373117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10872 + ... + 12478.

It is an arithmetic number, because the mean of its divisors is an integer number (1944072).

Almost surely, 2^18761725 is an apocalyptic number.

It is an amenable number.

18761725 is a deficient number, since it is larger than the sum of its proper divisors (4567139).

18761725 is a wasteful number, since it uses less digits than its factorization.

18761725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084 (or 2079 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 18761725 is about 4331.4806937120. The cubic root of 18761725 is about 265.7200070755.

The spelling of 18761725 in words is "eighteen million, seven hundred sixty-one thousand, seven hundred twenty-five".