25415414040 has 64 divisors (see below), whose sum is σ = 76257423360. Its totient is φ = 6776449920.

The previous prime is 25415414033. The next prime is 25415414041. The reversal of 25415414040 is 4041451452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25415413989 and 25415414007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25415414041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1202847 + ... + 1223793.

It is an arithmetic number, because the mean of its divisors is an integer number (1191522240).

Almost surely, 2^25415414040 is an apocalyptic number.

25415414040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25415414040 is an abundant number, since it is smaller than the sum of its proper divisors (50842009320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25415414040 is a wasteful number, since it uses less digits than its factorization.

25415414040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31072 (or 31068 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 25415414040 its reverse (4041451452), we get a palindrome (29456865492).

The spelling of 25415414040 in words is "twenty-five billion, four hundred fifteen million, four hundred fourteen thousand, forty".