25530052423402 has 4 divisors (see below), whose sum is σ = 38295078635106. Its totient is φ = 12765026211700.

The previous prime is 25530052423397. The next prime is 25530052423427. The reversal of 25530052423402 is 20432425003552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21644537312161 + 3885515111241 = 4652369^2 + 1971171^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6382513105849 + ... + 6382513105852.

Almost surely, 2^{25530052423402} is an apocalyptic number.

25530052423402 is a deficient number, since it is larger than the sum of its proper divisors (12765026211704).

25530052423402 is a wasteful number, since it uses less digits than its factorization.

25530052423402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12765026211703.

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 25530052423402 its reverse (20432425003552), we get a palindrome (45962477426954).

The spelling of 25530052423402 in words is "twenty-five trillion, five hundred thirty billion, fifty-two million, four hundred twenty-three thousand, four hundred two".