25541211442 has 16 divisors (see below), whose sum is σ = 40066617600. Its totient is φ = 12188146432.

The previous prime is 25541211433. The next prime is 25541211467. The reversal of 25541211442 is 24411214552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597658 + ... + 638965.

It is an arithmetic number, because the mean of its divisors is an integer number (2504163600).

Almost surely, 2^25541211442 is an apocalyptic number.

25541211442 is a deficient number, since it is larger than the sum of its proper divisors (14525406158).

25541211442 is a wasteful number, since it uses less digits than its factorization.

25541211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237097.

The product of its digits is 12800, while the sum is 31.

Adding to 25541211442 its reverse (24411214552), we get a palindrome (49952425994).

The spelling of 25541211442 in words is "twenty-five billion, five hundred forty-one million, two hundred eleven thousand, four hundred forty-two".