25219871053 has 4 divisors (see below), whose sum is σ = 27159861148. Its totient is φ = 23279880960.

The previous prime is 25219871023. The next prime is 25219871057. The reversal of 25219871053 is 35017891252.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1552202404 + 23667668649 = 39398^2 + 153843^2 .

It is a cyclic number.

It is not a de Polignac number, because 25219871053 - 2¹³ = 25219862861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25219871057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969995028 + ... + 969995053.

It is an arithmetic number, because the mean of its divisors is an integer number (6789965287).

Almost surely, 2^25219871053 is an apocalyptic number.

It is an amenable number.

25219871053 is a deficient number, since it is larger than the sum of its proper divisors (1939990095).

25219871053 is a wasteful number, since it uses less digits than its factorization.

25219871053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939990094.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 25219871053 in words is "twenty-five billion, two hundred nineteen million, eight hundred seventy-one thousand, fifty-three".