1225252541 has 8 divisors (see below), whose sum is σ = 1262807040. Its totient is φ = 1188176688.

The previous prime is 1225252537. The next prime is 1225252547. The reversal of 1225252541 is 1452525221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1225252541 - 2² = 1225252537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225252547) 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, 114461 + ... + 124706.

It is an arithmetic number, because the mean of its divisors is an integer number (157850880).

Almost surely, 2^1225252541 is an apocalyptic number.

It is an amenable number.

1225252541 is a deficient number, since it is larger than the sum of its proper divisors (37554499).

1225252541 is a wasteful number, since it uses less digits than its factorization.

1225252541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239323.

The product of its digits is 8000, while the sum is 29.

The square root of 1225252541 is about 35003.6075426519. The cubic root of 1225252541 is about 1070.0610035968.

Adding to 1225252541 its reverse (1452525221), we get a palindrome (2677777762).

The spelling of 1225252541 in words is "one billion, two hundred twenty-five million, two hundred fifty-two thousand, five hundred forty-one".