20514625 has 8 divisors (see below), whose sum is σ = 25602408. Its totient is φ = 16411600.

The previous prime is 20514619. The next prime is 20514677. The reversal of 20514625 is 52641502.

It can be written as a sum of positive squares in 4 ways, for example, as 147456 + 20367169 = 384^2 + 4513^2 .

It is not a de Polignac number, because 20514625 - 2³ = 20514617 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 20514625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81934 + ... + 82183.

It is an arithmetic number, because the mean of its divisors is an integer number (3200301).

Almost surely, 2^20514625 is an apocalyptic number.

20514625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20514625 is a deficient number, since it is larger than the sum of its proper divisors (5087783).

20514625 is an equidigital number, since it uses as much as digits as its factorization.

20514625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164132 (or 164122 counting only the distinct ones).

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

The square root of 20514625 is about 4529.3073421882. The cubic root of 20514625 is about 273.7502519406.

The spelling of 20514625 in words is "twenty million, five hundred fourteen thousand, six hundred twenty-five".