25730490534 has 32 divisors (see below), whose sum is σ = 58949047296. Its totient is φ = 7334506560.

The previous prime is 25730490491. The next prime is 25730490553. The reversal of 25730490534 is 43509403752.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 692607 + ... + 728810.

It is an arithmetic number, because the mean of its divisors is an integer number (1842157728).

Almost surely, 2^25730490534 is an apocalyptic number.

25730490534 is an abundant number, since it is smaller than the sum of its proper divisors (33218556762).

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

25730490534 is a wasteful number, since it uses less digits than its factorization.

25730490534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421860.

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 25730490534 in words is "twenty-five billion, seven hundred thirty million, four hundred ninety thousand, five hundred thirty-four".