25400022 has 16 divisors (see below), whose sum is σ = 51881472. Its totient is φ = 8286440.

The previous prime is 25400021. The next prime is 25400047. The reversal of 25400022 is 22000452.

It is a super-2 number, since 2×25400022² = 1290322235200968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25399974 and 25400010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25400021) 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, 44754 + ... + 45317.

It is an arithmetic number, because the mean of its divisors is an integer number (3242592).

Almost surely, 2^25400022 is an apocalyptic number.

25400022 is an abundant number, since it is smaller than the sum of its proper divisors (26481450).

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

25400022 is a wasteful number, since it uses less digits than its factorization.

25400022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90123.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 25400022 is about 5039.8434499496. The cubic root of 25400022 is about 293.9530907619.

Adding to 25400022 its reverse (22000452), we get a palindrome (47400474).

The spelling of 25400022 in words is "twenty-five million, four hundred thousand, twenty-two".