25340145633 has 24 divisors (see below), whose sum is σ = 40169054016. Its totient is φ = 15265692000.

The previous prime is 25340145613. The next prime is 25340145661. The reversal of 25340145633 is 33654104352.

25340145633 is a `hidden beast` number, since 2 + 5 + 3 + 4 + 0 + 14 + 5 + 633 = 666.

It is not a de Polignac number, because 25340145633 - 2⁵ = 25340145601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25340145613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 749818 + ... + 782883.

It is an arithmetic number, because the mean of its divisors is an integer number (1673710584).

Almost surely, 2^25340145633 is an apocalyptic number.

It is an amenable number.

25340145633 is a deficient number, since it is larger than the sum of its proper divisors (14828908383).

25340145633 is a wasteful number, since it uses less digits than its factorization.

25340145633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532885 (or 1532882 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 25340145633 its reverse (33654104352), we get a palindrome (58994249985).

The spelling of 25340145633 in words is "twenty-five billion, three hundred forty million, one hundred forty-five thousand, six hundred thirty-three".