25512120145 has 8 divisors (see below), whose sum is σ = 31945611456. Its totient is φ = 19522317936.

The previous prime is 25512120113. The next prime is 25512120223. The reversal of 25512120145 is 54102121552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25512120145 - 2⁵ = 25512120113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110922147 + ... + 110922376.

It is an arithmetic number, because the mean of its divisors is an integer number (3993201432).

Almost surely, 2^25512120145 is an apocalyptic number.

It is an amenable number.

25512120145 is a deficient number, since it is larger than the sum of its proper divisors (6433491311).

25512120145 is a wasteful number, since it uses less digits than its factorization.

25512120145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221844551.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 25512120145 its reverse (54102121552), we get a palindrome (79614241697).

The spelling of 25512120145 in words is "twenty-five billion, five hundred twelve million, one hundred twenty thousand, one hundred forty-five".