25454105042 has 8 divisors (see below), whose sum is σ = 38559189132. Its totient is φ = 12601042000.

The previous prime is 25454105023. The next prime is 25454105051. The reversal of 25454105042 is 24050145452.

It can be written as a sum of positive squares in 2 ways, for example, as 23316984601 + 2137120441 = 152699^2 + 46229^2 .

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

It is a super-2 number, since 2×25454105042² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63005009 + ... + 63005412.

Almost surely, 2^25454105042 is an apocalyptic number.

25454105042 is a deficient number, since it is larger than the sum of its proper divisors (13105084090).

25454105042 is a wasteful number, since it uses less digits than its factorization.

25454105042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126010524.

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 25454105042 in words is "twenty-five billion, four hundred fifty-four million, one hundred five thousand, forty-two".