25401320430 has 32 divisors (see below), whose sum is σ = 61231745664. Its totient is φ = 6743843616.

The previous prime is 25401320393. The next prime is 25401320431. The reversal of 25401320430 is 3402310452.

It is a self number, because there is not a number n which added to its sum of digits gives 25401320430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25401320431) 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 15 ways as a sum of consecutive naturals, for example, 1858192 + ... + 1871811.

It is an arithmetic number, because the mean of its divisors is an integer number (1913492052).

Almost surely, 2^25401320430 is an apocalyptic number.

25401320430 is an abundant number, since it is smaller than the sum of its proper divisors (35830425234).

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

25401320430 is a wasteful number, since it uses less digits than its factorization.

25401320430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730240.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 25401320430 its reverse (3402310452), we get a palindrome (28803630882).

The spelling of 25401320430 in words is "twenty-five billion, four hundred one million, three hundred twenty thousand, four hundred thirty".