25221262 has 8 divisors (see below), whose sum is σ = 41271192. Its totient is φ = 11464200.

The previous prime is 25221253. The next prime is 25221277. The reversal of 25221262 is 26212252.

It is a happy number.

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

It is a super-2 number, since 2×25221262² = 1272224113745288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1146421 = 25221262 / (2 + 5 + 2 + 2 + 1 + 2 + 6 + 2).

It is a congruent number.

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, 573189 + ... + 573232.

It is an arithmetic number, because the mean of its divisors is an integer number (5158899).

Almost surely, 2^25221262 is an apocalyptic number.

25221262 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25221262 is a deficient number, since it is larger than the sum of its proper divisors (16049930).

25221262 is a wasteful number, since it uses less digits than its factorization.

25221262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146434.

The product of its digits is 960, while the sum is 22.

The square root of 25221262 is about 5022.0774585823. The cubic root of 25221262 is about 293.2618733756.

The spelling of 25221262 in words is "twenty-five million, two hundred twenty-one thousand, two hundred sixty-two".