25420354000 has 40 divisors (see below), whose sum is σ = 61466420808. Its totient is φ = 10168140800.

The previous prime is 25420353979. The next prime is 25420354021. The reversal of 25420354000 is 45302452.

It is an interprime number because it is at equal distance from previous prime (25420353979) and next prime (25420354021).

It can be written as a sum of positive squares in 4 ways, for example, as 4431298624 + 20989055376 = 66568^2 + 144876^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6353089 + ... + 6357088.

Almost surely, 2^25420354000 is an apocalyptic number.

25420354000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25420354000 is an abundant number, since it is smaller than the sum of its proper divisors (36046066808).

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

25420354000 is a wasteful number, since it uses less digits than its factorization.

25420354000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12710200 (or 12710184 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 25420354000 its reverse (45302452), we get a palindrome (25465656452).

The spelling of 25420354000 in words is "twenty-five billion, four hundred twenty million, three hundred fifty-four thousand".