25504151145 has 64 divisors (see below), whose sum is σ = 47186012160. Its totient is φ = 11625651200.

The previous prime is 25504151137. The next prime is 25504151149. The reversal of 25504151145 is 54115140552.

It is a happy number.

It is not a de Polignac number, because 25504151145 - 2³ = 25504151137 is a prime.

It is a super-2 number, since 2×25504151145² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (25504151149) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2887546 + ... + 2896364.

It is an arithmetic number, because the mean of its divisors is an integer number (737281440).

Almost surely, 2^25504151145 is an apocalyptic number.

It is an amenable number.

25504151145 is a deficient number, since it is larger than the sum of its proper divisors (21681861015).

25504151145 is a wasteful number, since it uses less digits than its factorization.

25504151145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9886.

The product of its (nonzero) digits is 20000, while the sum is 33.

Adding to 25504151145 its reverse (54115140552), we get a palindrome (79619291697).

The spelling of 25504151145 in words is "twenty-five billion, five hundred four million, one hundred fifty-one thousand, one hundred forty-five".