20377425 has 24 divisors (see below), whose sum is σ = 35158464. Its totient is φ = 10394560.

The previous prime is 20377421. The next prime is 20377429. The reversal of 20377425 is 52477302.

It is an interprime number because it is at equal distance from previous prime (20377421) and next prime (20377429).

It is not a de Polignac number, because 20377425 - 2² = 20377421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20377392 and 20377401.

It is not an unprimeable number, because it can be changed into a prime (20377421) 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, 4182 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (1464936).

Almost surely, 2^20377425 is an apocalyptic number.

20377425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20377425 is a deficient number, since it is larger than the sum of its proper divisors (14781039).

20377425 is a wasteful number, since it uses less digits than its factorization.

20377425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11849 (or 11844 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 20377425 is about 4514.1361299810. The cubic root of 20377425 is about 273.1386138784.

It can be divided in two parts, 20377 and 425, that added together give a palindrome (20802).

The spelling of 20377425 in words is "twenty million, three hundred seventy-seven thousand, four hundred twenty-five".