25354870497 has 24 divisors (see below), whose sum is σ = 39994175520. Its totient is φ = 15350801280.

The previous prime is 25354870451. The next prime is 25354870531. The reversal of 25354870497 is 79407845352.

It is a happy number.

25354870497 is a `hidden beast` number, since 2 + 5 + 3 + 548 + 7 + 0 + 4 + 97 = 666.

It is not a de Polignac number, because 25354870497 - 2¹⁴ = 25354854113 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25354870447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34347 + ... + 227792.

It is an arithmetic number, because the mean of its divisors is an integer number (1666423980).

Almost surely, 2^25354870497 is an apocalyptic number.

It is an amenable number.

25354870497 is a deficient number, since it is larger than the sum of its proper divisors (14639305023).

25354870497 is a wasteful number, since it uses less digits than its factorization.

25354870497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263133 (or 263130 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 25354870497 in words is "twenty-five billion, three hundred fifty-four million, eight hundred seventy thousand, four hundred ninety-seven".