20610425 has 24 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 14859200.

The previous prime is 20610407. The next prime is 20610427. The reversal of 20610425 is 52401602.

It is a happy number.

It is not a de Polignac number, because 20610425 - 2¹⁶ = 20544889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20610397 and 20610406.

It is not an unprimeable number, because it can be changed into a prime (20610427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40724 + ... + 41226.

It is an arithmetic number, because the mean of its divisors is an integer number (1171800).

Almost surely, 2^20610425 is an apocalyptic number.

20610425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20610425 is a deficient number, since it is larger than the sum of its proper divisors (7512775).

20610425 is a wasteful number, since it uses less digits than its factorization.

20610425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20610425 is about 4539.8705928694. The cubic root of 20610425 is about 274.1757135663.

The spelling of 20610425 in words is "twenty million, six hundred ten thousand, four hundred twenty-five".