25151201406 has 16 divisors (see below), whose sum is σ = 55891558800. Its totient is φ = 8383733784.

The previous prime is 25151201401. The next prime is 25151201407. The reversal of 25151201406 is 60410215152.

25151201406 is a `hidden beast` number, since 2 + 5 + 1 + 51 + 201 + 406 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 25151201406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25151201401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232881441 + ... + 232881548.

It is an arithmetic number, because the mean of its divisors is an integer number (3493222425).

Almost surely, 2^25151201406 is an apocalyptic number.

25151201406 is an abundant number, since it is smaller than the sum of its proper divisors (30740357394).

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

25151201406 is a wasteful number, since it uses less digits than its factorization.

25151201406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465763000 (or 465762994 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 25151201406 its reverse (60410215152), we get a palindrome (85561416558).

The spelling of 25151201406 in words is "twenty-five billion, one hundred fifty-one million, two hundred one thousand, four hundred six".