20146525 has 12 divisors (see below), whose sum is σ = 28550752. Its totient is φ = 13814640.

The previous prime is 20146523. The next prime is 20146543. The reversal of 20146525 is 52564102.

It is not a de Polignac number, because 20146525 - 2¹ = 20146523 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20146525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57387 + ... + 57736.

Almost surely, 2^20146525 is an apocalyptic number.

20146525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20146525 is a deficient number, since it is larger than the sum of its proper divisors (8404227).

20146525 is a wasteful number, since it uses less digits than its factorization.

20146525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115140 (or 115135 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 20146525 is about 4488.4880527857. The cubic root of 20146525 is about 272.1030328019.

The spelling of 20146525 in words is "twenty million, one hundred forty-six thousand, five hundred twenty-five".