25400122 has 8 divisors (see below), whose sum is σ = 41563872. Its totient is φ = 11545500.

The previous prime is 25400083. The next prime is 25400147. The reversal of 25400122 is 22100452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25400122² = 1290332395229768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25400096 and 25400105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577254 + ... + 577297.

It is an arithmetic number, because the mean of its divisors is an integer number (5195484).

Almost surely, 2^25400122 is an apocalyptic number.

25400122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25400122 is a deficient number, since it is larger than the sum of its proper divisors (16163750).

25400122 is a wasteful number, since it uses less digits than its factorization.

25400122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154564.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 25400122 is about 5039.8533708829. The cubic root of 25400122 is about 293.9534765263.

Adding to 25400122 its reverse (22100452), we get a palindrome (47500574).

The spelling of 25400122 in words is "twenty-five million, four hundred thousand, one hundred twenty-two".