25122378 has 16 divisors (see below), whose sum is σ = 50641920. Its totient is φ = 8307936.

The previous prime is 25122373. The next prime is 25122403. The reversal of 25122378 is 87322152.

It is a super-2 number, since 2×25122378² = 1262267752749768, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25122373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15723 + ... + 17246.

It is an arithmetic number, because the mean of its divisors is an integer number (3165120).

Almost surely, 2^25122378 is an apocalyptic number.

25122378 is an abundant number, since it is smaller than the sum of its proper divisors (25519542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25122378 is a wasteful number, since it uses less digits than its factorization.

25122378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33101.

The product of its digits is 6720, while the sum is 30.

The square root of 25122378 is about 5012.2228601689. Note that the first 3 decimals coincide. The cubic root of 25122378 is about 292.8781113453.

The spelling of 25122378 in words is "twenty-five million, one hundred twenty-two thousand, three hundred seventy-eight".