25235222402 has 8 divisors (see below), whose sum is σ = 40764590076. Its totient is φ = 11647025712.

The previous prime is 25235222371. The next prime is 25235222413. The reversal of 25235222402 is 20422253252.

It can be written as a sum of positive squares in 2 ways, for example, as 22251987241 + 2983235161 = 149171^2 + 54619^2 .

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

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, 485292713 + ... + 485292764.

Almost surely, 2^25235222402 is an apocalyptic number.

25235222402 is a deficient number, since it is larger than the sum of its proper divisors (15529367674).

25235222402 is a wasteful number, since it uses less digits than its factorization.

25235222402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970585492.

The product of its (nonzero) digits is 19200, while the sum is 29.

Adding to 25235222402 its reverse (20422253252), we get a palindrome (45657475654).

The spelling of 25235222402 in words is "twenty-five billion, two hundred thirty-five million, two hundred twenty-two thousand, four hundred two".