25244501345 has 48 divisors (see below), whose sum is σ = 37668613248. Its totient is φ = 16153885440.

The previous prime is 25244501341. The next prime is 25244501353. The reversal of 25244501345 is 54310544252.

It is not a de Polignac number, because 25244501345 - 2² = 25244501341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25244501341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176402 + ... + 285668.

It is an arithmetic number, because the mean of its divisors is an integer number (784762776).

Almost surely, 2^25244501345 is an apocalyptic number.

It is an amenable number.

25244501345 is a deficient number, since it is larger than the sum of its proper divisors (12424111903).

25244501345 is a wasteful number, since it uses less digits than its factorization.

25244501345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109350 (or 109343 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 25244501345 in words is "twenty-five billion, two hundred forty-four million, five hundred one thousand, three hundred forty-five".