25229690852 has 6 divisors (see below), whose sum is σ = 44151958998. Its totient is φ = 12614845424.

The previous prime is 25229690839. The next prime is 25229690881. The reversal of 25229690852 is 25809692252.

It can be written as a sum of positive squares in only one way, i.e., 24720015076 + 509675776 = 157226^2 + 22576^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25229690852.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3153711353 + ... + 3153711360.

It is an arithmetic number, because the mean of its divisors is an integer number (7358659833).

Almost surely, 2^25229690852 is an apocalyptic number.

It is an amenable number.

25229690852 is a deficient number, since it is larger than the sum of its proper divisors (18922268146).

25229690852 is a wasteful number, since it uses less digits than its factorization.

25229690852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6307422717 (or 6307422715 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 25229690852 in words is "twenty-five billion, two hundred twenty-nine million, six hundred ninety thousand, eight hundred fifty-two".