25245251153 has 8 divisors (see below), whose sum is σ = 25864067880. Its totient is φ = 24626581120.

The previous prime is 25245251147. The next prime is 25245251159. The reversal of 25245251153 is 35115254252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25245251147) and next prime (25245251159).

It can be written as a sum of positive squares in 4 ways, for example, as 531210304 + 24714040849 = 23048^2 + 157207^2 .

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

It is not a de Polignac number, because 25245251153 - 2¹² = 25245247057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25245251159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364943 + ... + 428571.

It is an arithmetic number, because the mean of its divisors is an integer number (3233008485).

Almost surely, 2^25245251153 is an apocalyptic number.

It is an amenable number.

25245251153 is a deficient number, since it is larger than the sum of its proper divisors (618816727).

25245251153 is an equidigital number, since it uses as much as digits as its factorization.

25245251153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73347.

The product of its digits is 60000, while the sum is 35.

The spelling of 25245251153 in words is "twenty-five billion, two hundred forty-five million, two hundred fifty-one thousand, one hundred fifty-three".